[35] Glare and halos were reported as severe by ... zonular supporting devices improved the safety of cataract surgery and stability of IOL in complex cases.

The natural lens is replaced with an artificial lens called an IOL ... and you see halos around bright objects at night. There are other causes which may lead to other types of cataracts, like ...

which takes effect by the end of the month, the state-owned health insurer will pay up to P80,900 for extracapsular cataract extraction with insertion of intraocular lens (IOL) in adult patients ...

In the dark, they can make you see halos around lights ... When you have cataract surgery you will need to choose an IOL.